Developer Resources
Deep dive into tool mechanics and explore efficient workflows.
Etsy Digital Download Pricing: How to Price Printables, Templates, and Files
Digital downloads still have costs. Learn how to price instant downloads and made-to-order files with tiers, fee modeling, discounts, and clearer listing content.
The Complete Guide to Etsy Fees in 2026: What Every Seller Actually Pays
Etsy charges listing fees, transaction fees, payment processing, Offsite Ads, regulatory fees, and currency conversion. Here's the full breakdown.
Etsy Pricing Strategy: How to Price for Profit (Not Just Revenue)
Learn a systematic approach to Etsy pricing — start from costs, account for every fee, set a target profit, and reverse-engineer your ideal listing price.
Etsy Offsite Ads Explained: The Program You Can't Always Opt Out Of
Etsy Offsite Ads charge 12% or 15% per attributed order. Understand rate tiers, the $100 cap, effective rates, and how to build ad costs into your pricing.
Etsy International Selling Fees: Regulatory Charges and Currency Conversion
Regulatory Operating Fees and 2.5% currency conversion charges silently erode margins for non-US sellers. Learn country-specific rates and strategies to minimize them.
UUID Demystified: The Math Behind Those 36-Character Identifiers
How do you generate globally unique IDs without a central authority? Explore UUID versions, collision math, and when to use each one.
URL Encoding Demystified: Safe Characters, Query Strings, and Browser Behavior
Learn when to use percent encoding, encodeURIComponent, URLSearchParams, and careful query-string handling to avoid broken redirects and callbacks.
Understanding Unicode: Why Character Encoding Still Breaks in Production
Unicode, UTF-8, escaping, and normalization live at different layers. Learn how encoding bugs enter APIs, files, databases, and search workflows.
Timezones & Unix Timestamps: Why Time Is the Hardest Problem in Programming
From leap seconds to DST transitions, handling time correctly is deceptively hard. Learn the principles that prevent time-related bugs.
Password Entropy Explained: Why Length Always Beats Complexity
The math behind password strength is clear: length matters exponentially more than special characters. Learn what entropy actually means for your security.